Washington Knolls Weather Forecast

    • 24
    • 49

    Decreasing Clouds

    • 26
    • 37

    Partly Sunny

    • 40
    • 45

    Mostly Cloudy

    • 43
    • 56

    Mostly Cloudy

    • 54
    • 60

    Mostly Cloudy

    • 46
    • 70

    Partly Sunny

Today 20 Dec Sangamon

Mostly sunny. Not as cool with Highs in the upper 40s. Temperature falling into the lower 40s in the afternoon. South Winds 15 to 20 Mph, becoming west 10 to 15 Mph in the afternoon.

Tonight 20 Dec Sangamon

Partly cloudy. Lows in the lower 20s. Northwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Knolls Temperature Statistics

December Temperature

Springfield - Abraham Lincoln Capital Airport (3.7 miles)

  • Lowest 14 December, 2025

    -6 °F

  • Average December

    24.2 °F

  • Highest 16 December, 2025

    44.1 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (3.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    65 °F
Get WillyWeather+ to remove ads